Best Protein Powders UK — Mixed, Tasted, and Judged
Protein powder is the most-bought, least-understood supplement in the UK. You can spend £20 or £50 for the same 30g of protein, and the taste gap between them is enormous. We've mixed them with water and with milk, choked down the chalky ones, and found the powders worth your money — including a joint-care pick from Petlab Co.
Whey Concentrate vs Isolate vs Casein
Whey concentrate is the default — ~80% protein, affordable, mixes fine, and tastes good in a decent brand. It's the right choice for most people. Whey isolate is ~90% protein with less lactose and fat — useful if you're lactose-intolerant or cutting calories, but you pay a premium for marginal benefit. Casein is slow-digesting and thick — good before bed, awful for a quick shake; it clumps and tastes like cement if the flavour is off.
Clear whey is the new trend — a refreshing, juice-like protein drink instead of a milky shake. It's genuinely refreshing and great if you hate creamy shakes, but the protein per serving is often lower and it's pricier. For everyday use, a whey concentrate from a reputable brand is the best value per gram of protein.
Vegan Protein That Doesn't Taste Like a Field
Vegan protein used to be unpalatable — gritty, earthy, and weak on protein. It's improved enormously. Pea and rice blends now hit 70–80% protein and mix reasonably. The best vegan brands flavour them properly (chocolate and salted caramel hide the plant taste best). If you're plant-based or dairy-free, a pea/rice blend is the pick — soy isolate is another option but has a stronger taste and not everyone tolerates soy.
The compromise with vegan protein: it's harder to make taste good, so cheap vegan powders are genuinely bad. Spend a bit more on a flavoured blend from a reputable brand. Check the protein per 100g — anything under 70% is mostly filler. And watch for 'complete amino acid' claims; pea and rice combined cover the amino profile, single-source vegan proteins often don't.
Taste, Mixability, and Price Per Gram
The two things that actually matter day-to-day: does it mix without a blender, and does it taste good enough to drink daily? The best powders mix with a shaker in 10 seconds and taste like a milkshake, not chalk. Cheap powders clump, leave grit at the bottom, and taste of sweetener. Read reviews for the specific flavour — chocolate and vanilla are safe; exotic flavours are a gamble.
Price per gram of protein is the honest metric. A £25 tub with 30 servings of 20g protein = 600g protein for £25 = 4.2p per gram. A £40 tub with 25 servings of 25g = 625g for £40 = 6.4p per gram. The cheaper tub is better value even if the premium one 'feels' nicer. Buy the 2.5kg or 5kg bags once you've confirmed you like the flavour — the per-gram price drops sharply.
Joint Care and Why Petlab Co Keeps Coming Up
If you're training hard, joints take a beating — knees, elbows, and shoulders especially. A dedicated joint supplement can help alongside protein. Petlab Co makes a joint-care formula (glucosamine, chondroitin, turmeric) that's popular with lifters and older athletes. The evidence on glucosamine is mixed but decent for some people; turmeric (curcumin) has stronger anti-inflammatory evidence.
Joint supplements aren't a replacement for good form, adequate rest, and not piling on too much weight too fast. But if you're nursing a cranky knee or elbow, a joint formula alongside your protein is worth trying. Combine with fish oil (omega-3) for the best anti-inflammatory stack, and don't expect overnight results — joint supplements take 6–12 weeks to show benefit.
For most people, a whey concentrate from a reputable brand at ~4p per gram of protein is the sweet spot. Go isolate if lactose-sensitive, vegan blend if plant-based, clear whey if you hate milky shakes. Add Petlab Co's joint formula if your joints are creaking. And always check protein per 100g and price per gram — the rest is marketing.